package net.hiwii.system.parser;



/* All AST nodes must implement this interface.  It provides basic
   machinery for constructing the parent and child relationships
   between nodes. */

public interface Node{

	/** This method is called after the node has been made the current
    node.  It indicates that child nodes can now be added to it. */
	public void jjtOpen();

	/** This method is called after all the child nodes have been
    added. */
	public void jjtClose();

	/** This pair of methods are used to inform the node of its
    parent. */
	public void jjtSetParent(Node n);
	public Node jjtGetParent();

	/** This method tells the node to add its argument to the node's
    list of children.  */
	public void jjtAddChild(Node n, int i);

	/** This method returns a child node.  The children are numbered
     from zero, left to right. */
	public Node jjtGetChild(int i);

	/** Return the number of children the node has. */
	public int jjtGetNumChildren();

}

